Innovative Water Treatment and Waste Handling

Transcription

1 Innovative Water Treatment and Waste Handling

2 Index P. 3 An Overview of WEHRLE Umwelt Water P. 4 P. 6 P. 7 Bioreator Plants Adsorption Plants / SBR processes Nanofiltration and Reverse Osmosis Plants / Biomembrat plus-process Innovation from Tradition P. 8 P. 9 P. 10 P. 12 Waste Mechanical Biological Waste Treatment Anaerobic Wastewater Treatment Service Environmental Engineering Service Addresses This philosophy governs the outlook of our business. Since 1860, the founding year of our parent company WEHRLE-WERK AG, we have been active in the energy and environmental industries. WEHRLE Umwelt GmbH, deriving from a department of WEHRLE-WERK AG, has today developed into a leading provider or environmental technology. We offer our customers intelligent and innovative solutions and we can provide a whole range of services, right up to the delivery of turn-key plants. Concepts Laboratory Plants Pilot Plants Plant Engineering Construction and Fabrication Control Commissioning Maintenance and Service Plant Operation and Financing 2

3 Business Overview WEHRLE Umwelt GmbH was founded in 2002 as a subsidiary of WEHRLE-WERK AG in order to consolidate into one unit, the various environmental activities of the WEHRLE Group. WEHRLE-WERK AG has, since 1860, been involved in the energy and environmental industries The Environmental Technology department was created within WEHRLE-WERK AG. In the first years the area of business mainly involved the planning and commissioning of industrial wastewater treatment plants in Germany and Switzerland In close cooperation with the University of Stuttgart, pressurized bioreactors with subsequent membrane filtration were registered as a patent (BIOMEMBRAT -Process). WEHRLE-WERK AG received the license for this process WEHRLE-WERK AG brought into operation the first membrane bioreactor in the world that was designed for the treatment of special liquid waste. In cooperation with RWTH Aachen, further patents for new processes were registered, particularly in the field of secondary treatment (BIOMEMBRAT plus-process) As a result of the increasing demand for environmental technology within the European Union, the environmental technology department of WEHRLE-WERK AG underwent a process of internationalization. A sales office in Gijon, Spain was founded with the aim of developing the Spanish leachate treatment market Founding of WEHRLE Environmental in Witney, United Kingdom A partnership for the French market was founded with OVIVE S.A.R.L in Roubaix, France WEHRLE Environmental Technology (Changzhou) Co. Ltd. was founded. This staked a place for WEHRLE technology in the rapidly growing Chinese environmental market. In the same year the environment technology department was separated from WEHRLE-WERK AG into WEHRLE Umwelt GmbH TELWESA was created with two Spanish partners. TRATAMIENTOS DE EFLUENTES LIQUIDOS WEHRLE UMWELT S.A. offers our customers maintenance and service support as well as operational management in the Spanish market. 3

4 Water Bioreactors with External s bioreactors rank among the most efficient biological wastewater treatment plants. By using membrane filtration to separate biomass from the treated effluent, it is possible to achieve an extremely compact construction volume, high standards of treatment and an effluent completely free of microorganisms. These are only a few of the many advantages of this technology. In the 1980 s WEHRLE-WERK AG, the University of Stuttgart and RWTH Aachen University together developed the basis of membrane bioreactor technology. The first full scale BIOMEMBRAT treatment plant, based on the results of this collaborative research, was conceived and in operation in Flexibility in the choice of membranes and our comprehensive know-how, even in conventional wastewater treatment technology allow us to provide independent advice and consultancy as to which processes best suit our customer. We therefore offer three different systems: BIOMEMBRAT BIOMEMBRAT -LE BIOMEMBRAT -Airlift With this philosophy and with nearly 20 years experience and over 100 references worldwide, WEHRLE Umwelt GmbH have become one of the leading suppliers of Bioreactor Technology. BIOMEMBRAT wastewater air aeration membrane filtration excess sludge exhaust air treated water processes, low investment and operating costs. The reduced production of excess sludge keeps sludge disposal costs down. The process of aerobically biodegrading contaminants is extremely stable and in comparison to thermal processes, energy efficient. The reduced installed membrane area keeps down the costs of membrane replacement. The patented BIOMEMBRAT process is suitable for the treatment of highly loaded wastewater. This includes wastewater from the printing, chemical, and pharmaceutical industries, as well as landfill leachate, wastewater from waste oil and special waste disposal, and road tanker cleaning. Activated sludge from the bioreactor is pumped, at a high flow rate, through external membranes that are arranged in series. The high pressure loss encountered provides the high feed pressure needed for the removal of the treated effluent. Different membranes and module configurations can be applied depending on the wastewater being treated. The high cross flow velocity provides the necessary turbulence on the membrane walls. BIOMEMBRAT is the optimal process for highly loaded wastewater, since it offers, in comparison to other treatment separation Limit Specific energy consumption of the membrane plant Tubular membrane, Ø > 8 mm Ultrafiltration kwh/m 3 Wastewater Flux rate l/(m 2 h) Activated sludge kg/m 3 concentration area specific energy consumption W/m 2 membrane area 4

5 BIOMEMBRAT -LE The patented BIOMEMBRAT -LE process is suitable for the treatment of medium strength wastewaters e.g. wastewater from breweries, dairies, chemical and galvanizing plants, the automotive industries and leachate. Activated sludge from the bioreactor separation Limit Specific energy consumption of the membrane plant Tubular membrane Ø > 5-8 mm Microfiltration or Ultrafiltration kwh/m 3 Wastewater Flux rate l/(m 2 h) Activated sludge 8-15 kg/m 3 concentration area specific energy consumption W/m 2 membrane area is pumped, at a low flow rate, through external membranes that are arranged in series. The feed pressure and a vacuum on the permeate side drive the filtration of the treated effluent. Any build up is effectively removed by periodic back flushing. Short term increases in the feed velocity (feed flush) and the backwashing of permeate to the retentate side (permeate flush) allow high flux wastewater air aeration rates with low energy consumption. Because of its flexibility this process offers the best solution for the cost effective treatment of wastewater with a high degree of flow variation. It is possible to overcome peaks in flow simply by adjusting the speed of the recirculation pumps. This avoids the cost intensive approach of installing spare membrane capacity. membrane filtration exhaust air treated water excess sludge BIOMEMBRAT -Airlift The BIOMEMBRAT -Airlift process is suitable for the treatment of weak wastewaters, such as municipal wastewater, black and gray wastewater from ships, wastewater from laundries, the catering trades, and hotels, as well as groundwater treatment. Activated sludge from the bioreactor is pumped, at a reduced flow, through external membrane modules that are mounted vertically in parallel. This low flow, as well as the continuous or intermittent addition of air at the inlet to the modules, provides the necessary turbulence on the membrane wall. The backwashing of permeate (Permeate Flush) and the optional pumping BIOMEMBRAT -LE und BIOMEMBRAT - Airlift are the optimum processes for low and medium loaded wastewater, combining low investment, energy and membrane replacement costs. of air into the retentate side (Air Flush) provides high flux rates with low energy consumption. Tubular membrane, Ø > 5-6 mm separation Limit Specific energy consumption of the membrane plant Microfiltration or Ultrafiltration 0,6-1,5 kwh/m 3 Wastewater wastewater aeration membrane filtration exhaust air excess sludge Flux rate l/(m 2 h) Activated sludge concentration 8-15 kg/m 3 area specific energy consumption W/m 2 membrane area air treated water 5

6 Water Adsorption Plants For the removal of non-biodegradable COD and halogenated hydrocarbon (AOX) look no further than activated carbon. The adsorption of organic contaminants is based on physical process that take place on the surface of the activated carbon. Due to a highly developed pore system, activated carbon has an extremely large inner surface area. The concentration gradient of the material that is adsorbed is the driving force behind adsorption. Once the activated carbon is completely loaded it can be removed and replaced with fresh activated carbon. Biological pretreatment is recommended in order to reduce the operating cost of an adsorption plant. Economical operation can be maintained if the only compounds to be adsorbed are those which are difficult to biodegrade. In addition, the removal of suspended solids with a preceding membrane plant increases the efficiency of the systems and improves the adsorption capacity. SBR-Process (Sequencing-Batch-Reactor) The economic pretreatment of wastewater has, over the last few years, gained increasing importance within industry. Wastewater pretreatment reduces disposal charges and likewise, the operating costs of a business. At the center of attention are space saving processes that can accommodate wastewater streams that vary considerably with regards to flow. Therefore, SBR-Process For weak or medium loaded wastewater. Simple, reduced-maintenance process technology. SBR has, as a pretreatment process, achieved considerable acceptance in many different application areas such as the food, dairy and brewery industries, as well as in the treatment of wastewater with high concentrations of nitrogen compounds. Low operating costs, simple and maintenance free process technology and an ability to adapt to changing inlet and outlet requirements make SBR plants very attractive. SBR container plant for sludge water treatment Two SBR reactors for sludge water treatment SBR plant for industrial wastewater treatment 6

7 Nanofiltration and Reverse Osmosis Plants plants are offered to cater for every treatment objective and concentration factor. High pressure plants can be used for reducing the concentrate produced in low pressure plants. Nanofiltration plants (< 20 bar) Low pressure reverse osmosis plants (20 30 bar) Reverse osmosis plants (30 50 bar) High pressure reverse osmosis plants (> 50 bar). Low pressure membrane plants can be used in the following applications: Nanofiltration in the paper industry Further treatment of MBR wastewater with the aim of complete water recycling or in situations where strict discharge limits are imposed. In drinking or freshwater treatment. Reverse osmosis in laundry operations High pressure reverse osmosis in leachate treatment BIOMEMBRAT plus-process The BIOMEMBRAT plus-process is especially suited to sites where treated effluent is to be discharged directly to river under strict consent or where reuse of the wastewater is required. The process combines a membrane plant with physical chemical treatment of the concentrate. The high concentration of the non biodegradable compounds in the concentrate increase the operating efficiency of the physicalchemical treatment plant. The concentrate, following chemical oxidation or activated carbon treatment, is returned to the biological stage. This process is noted for its ability to produce excellent quality effluent. Oxidation plant for concentrate treatment wastewater denitrification nitrification ultrafiltration exhaust air excess sludge air activated carbon adsorption nanofiltration treated water NF-buffer Biomembrat plus plant for leachate treatment (Rems-Murr-Kreis) 7

8 Service Environmental Engineering Service For more than a decade WEHRLE Umwelt GmbH has been active in plant operation. The direct cooperation between plant operation and construction is unique and promotes a multifaceted synergy. The know-how gained from building over 100 plants world-wide and from the long term operation of over 15 plants differs from every other service provider in terms of both quality and quantity. Our range of services are subject to continuous improvement and development using the newest knowledge and advances in plant construction and operation. For example the suitability of the newest developments available in the market can be tested for retrofitting under real operating conditions. By using this pool of experience we are able to directly tailor our individual, quick and results-orientated range of services to our customers needs. These services can be structured as follows. Contracting, operation and financing Process optimization, service, spare parts and operating materials Wastewater laboratory, pilot trials and pilot plants Contracting: Operating and Financing Models You concentrate on your core business we look after your wastewater treatment plant! Many customers with an obligation to maintain adequate wastewater disposal opt for a long term and complete service model. Also available is the complete financing of a wastewater treatment plant. WEHRLE Umwelt GmbH employs competent and experience operating personnel as well as a clearly structured and efficient operational management system. Our extensive knowledge of operating issues leads to higher efficiencies with the maximum availability and disposal stability. This, in many cases, receives strong official approval. You can see the benefits with the ability to calculate over the long term your operating costs while enjoying economical and risk free wastewater treatment! 10

9 Process Optimisation, Service, Spare Parts, Operating Materials You decide to operate your treatment plant independently. With an extensive and individual service package you can profit from the competence of WEHRLE Umwelt GmbH especially in the area of Bioreactor. This is applicable even if your plant was not built by us. With this service package you can receive: Maintenance of all plant components according to producer s instructions The latest knowledge in membrane cleaning Process optimization based on operating data Benchmarking against similar plants Placement of operating personnel if short staffed 24 hr emergency service for complete service customers Support with regulatory checks Supply of spare parts and operating materials (Long term contracts including guarantees) You can benefit from our Know-how! Wastewater Laboratory, Pilot Trials and Pilot Plants Do you want to know which process technology will in the long run treat your wastewater effectively and efficiently? Do you judge a wastewater treatment concept on the sum of the investment and long term operating costs? WEHRLE Umwelt GmbH is in a position to conduct many kinds of testing and characterization of wastewater with our fully equipped wastewater laboratory. Services offered include: In addition, with our pilot plants, we are able to conduct trials on wastewater directly on site. If required we can, in collaboration with Universities, carry out research. We rent pilot plant and on demand we can operate the trials and produce final reports. The condition of our pilot plants are always checked after each use. Testing the biological treatability of all wastewater types with our laboratory test plants. Ensuring the correct choice of membrane with our membrane test bed. Determining activated carbon isotherms. 11

10 WEHRLE Umwelt GmbH Bismarckstraße Emmendingen Deutschland Phone: Fax: Web: UNITED KINGDOM WEHRLE Environmental Antony Robinson Spinners Court, Office A5/6 53 West End Witney, Oxfordshire OX28 1NH Phone: CHINA WEHRLE Environmental Technology (Changzhou) Co. Ltd. Dr.-Ing. Yuezhong Li 15 Hi-Tech Park, Room Changzhou New District Changzhou Jiangsu Phone: SPAIN WEHRLE Medioambiente S.L. José Luis García Gonzales C./Belice, 1-3 C Gijón Asturias Phone: jlgarcia@wehrle.es TELWESA S.A. Carlos García C./Camprodon, Llagostera Girona Phone: garcia@telwesa.com FRANCE OVIVE S.A.R.L. Amaury Bierent 6, rue de la poste ROUBAIX Phone: contact@ovive.fr