Water Treatment
Green chemistry is in the early 1990 s by the American scholar P.T.Anastas puts forward, the definition of green chemistry can be expressed as: "through the product and process design, reduce the use of harmful substances and produce, realize the sustainable development of chemical industry". Power plant water treatment process is essentially a include raw material, product and by-product of chemical production process, a process of a by-product as raw materials of another process, form a loop or chain, would "eat dry squeeze net" raw materials, is feasible way in the development of green power plant water treatment process.
Low temperature multiple effect distillation is the world's mainstream method of hot water desalination process, can be below 70 ℃ will be distilled from fresh water, sea under the operation condition of the process. In the low-temperature multi-effect distillation desalination process, heating steam condensate forms after the show heat and latent heat release in the evaporator, feed water quadratic form distilled water evaporation, hitches in evaporator in residual water in the evaporator, formation of thick concentrated seawater. Low-temperature multi-effect distillation desalination with thermal power unit, steam using steam turbine extraction, can effectively reduce the thermal loss of cold source of 1. Fresh water from the low-temperature multi-effect distillation desalination (condensed water and distilled water), high purity (conductivity < 10 us/cm, total soluble solids < 5 mg/L), the water quality is equivalent to level in addition to salt water, the fresh water through simple purification or as industrial water without treatment.
Boiler make-up water treatment system
Boiler make-up water treatment system of condensed water, raw water for water desalination system uses level 1 mixed bed desalination water treatment process, the system output 2 x80 t/ h, regeneration of ion exchange resin base adopt outsourcing liquid alkali ion membrane liquid sodium hydroxide (level), liquid alkali dosage of 18.48m, boiler make-up water treatment process for: industrial water tank a fresh water pump - countercurrent regeneration acid cation exchanger— countercurrent regeneration alkali anion exchanger— mixed ion exchanger— salt water tanks — salt water pump, the main factory building heating system.3.3 circulating water treatment system Circulating water treatment system using electrolytic water for chlorine production and system Force 2 x160kg/h, dosing method for continuous and impingement, the combination of circulating water of sodium hypochlorite dosage 2708.6t, circulating water treatment system process is: the circulating water treatment system to the sea - self-cleaning filters - sea water pump - electrolytic chlorine water system device before a sodium hypochlorite storage tanks - and pump to the circulating water pool.
Recirculating water treatment system
2 sets of all water purification treatment adopts medium-pressure fine treatment system, the system set x33 profiteer 2x50% and 4. 3% output of high speed mixed bed, 2 units share a set of outside regeneration in condensate polishing treatment device, the regeneration of ion exchange resin with alkali adopt outsourcing liquid alkali ion membrane liquid sodium hydroxide (level), liquid alkali dosage of 91.2 m ".
Fine treatment system process is: the main exports of the condensate pump water a profiteer— trap and high speed mixed bed resin—low pressure heater.3.5 the wastewater treatment system Waste water treatment system including industrial wastewater treatment, including coal and oil, water treatment, sewage treatment, such as system, due to the amount of waste water and waste water.PH regularity is not strong, so to adjust wastewater pH value of the liquid alkali dosage can not be sure.
