污水處理技術，按處理程度劃分，可分為一級、二級和三級處理工藝。污水一級處理應用物理方法，如篩濾、沉淀等去除污水中不溶解的懸浮固體和漂浮物質。污水二級處理主要是應用生物處理方法，即通過微生物的代謝作用進行物質轉化的過程，將污水中的各種復雜的有機物氧化降解為簡單的物質。生物處理對污水水質、水溫、水中的溶氧量、pH值等有一定的要求。污水三級處理是在一、二級處理的基礎上，應用混凝、過濾、離子交換、反滲透等物理、化學方法去除污水中難溶解的有機物、磷、氮等營養性物質。污水中的污染物組成非常復雜，常常需要以上幾種方法組合，才能達到處理要求。

一 鋼鐵廠廢水處理工程概況

該鋼廠形成600萬噸/年生產規模時，平均排水量將達到4000m3/h。廢水處理工程設計平均日處理能力9.6萬米3，夏季最大日處理能力10.8萬米3,其中70%作為工業補水回到廠區管網，其余達標后排放。

  該廢水處理回用工程于2010年4月開工建設，20012年1月主體結構完工，2012年5月試運行，2012年8月交付生產。工程占地29500㎡，新建建、構筑物占地8041㎡，綠化覆蓋率32%，靜態投資為8643萬元。

  廠區全部廢水經處理后達到排放標準，其中回用水經軟化、過濾、消毒等深度處理后，達到生產用水標準。

本工程進水為典型的鋼鐵工業廢水，有機污染物含量不高，可生化性差，不適宜采用生化方法降解。本項目主要采用物理化學法。作為工業補水，在回用水深度處理中增加去除暫時硬度、總堿度軟化、過濾、消毒等工藝。

廠區排出的工業廢水用管道輸送至廢水處理廠進水口。經過預處理部分，用粗、細格柵將來水中較大顆粒的漂浮物去除；再由提升泵到配水構筑物，在此投加混凝劑和石灰以及硫酸，然后將廢水分配到高密度澄清池，除去水中的懸浮物和膠體物質，保證水的澄清度，同時外排水還有除氟工藝。總進水的70%經高密度澄清池處理后，再經V形濾池過濾并投加液氯消毒后，送往廠區作為工業水的補充水，總進水的30%經高密度澄清池處理至達標后排放。   

濟寧天通設備有限公司是一家從事水處理設備生產、銷售集一體化的企業，經過不斷的努力在國內外獲得了供不應求的大好市場，贏得了客戶的一致好評。

多年的歷程，公司始終堅持創新、品質、服務、敬業、感恩的理念。采納新創意，嚴格質量，全方位的服務跟蹤，堅持做出高品質產品。

我公司主要產品：水處理設備，污水處理設備、廢水處理設備、工業污水設備、農業廢水設備、雨水凈水設備、醫院污水設備、鋼廠廢水設備、屠宰場廢水設備、食品廠廢水處理設備等多種設備，可根據要求專業定制水處理設備。

Modern sewage treatment technology can be divided into first, second and tertiary treatments according to the degree of treatment. The first stage of wastewater treatment is the application of physical methods, such as screening and precipitation, to remove the suspended solids and floating substances that are not dissolved in sewage. Mainly is the application of biological treatment of secondary sewage treatment method, namely through the microbial metabolism process of material transformation, to a variety of complex organic oxidation degradation of a sewage to be a simple matter. Biological treatment has certain requirements for sewage water quality, water temperature, dissolved oxygen content in water and pH value. Wastewater tertiary treatment is in one, secondary treatment, on the basis of application of coagulation, filtration, ion exchange, reverse osmosis and other physical and chemical methods to remove dissolved organic matter, phosphorus and nitrogen in the wastewater and other nutritional substances. The composition of pollutants in sewage is very complicated, and it is often necessary to combine several methods to meet the requirements.

An overview of wastewater treatment works in a steel plant

The average displacement of the steel plant will reach 4000m to the third/h when the steel plant is produced at 6 million tons/year. The average daily processing capacity of wastewater treatment works is 96,000 m 3, and the maximum daily processing capacity of the summer is 10.8000m 3. 70% of it is returned to the factory pipe network as industrial rehydration, and the remaining discharge after reaching the standard.

The waste water treatment recycling project started construction in April 2010. The main structure was completed in January, 20012. The trial operation was conducted in May 2012 and the production was delivered in August 2012. The project covers an area of 29500 ㎡, the new building and structures which covers an area of 8041 ㎡, green coverage of 32%, the static investment is 86.43 million yuan.

All waste water in the factory will meet the emission standard after treatment, and the water will reach the standard of production water after softening, filtering and disinfecting.

This engineering water is typical of steel industry wastewater, organic pollutant content is not high, but biochemical difference is not suitable for biodegradation. This project mainly adopts physical chemistry method. As an industrial rehydration, the process of removing temporary hardness, softening of total alkalinity, filtration and disinfection is added in the treatment of water reuse.

The industrial effluent discharged from the factory is piped into the water inlet of the waste water treatment plant. After the pretreatment part, the large particles in the water will be removed by means of coarse and fine grille. By lift pump to the water distribution structures, again in the dosing coagulant and lime and sulfuric acid, and then assigned to high-density clarifier and wastewater to remove the suspended solids in the water and colloidal substances, ensure the clarity of water, drainage and fluoride in process at the same time. 70% of the total water treated with high-density clarifier, then through v-type filtration process and after adding the liquid chlorine disinfection, sent to the factory as make-up water of industrial water, 30% of the total water discharged after high-density clarifier processing to amount to mark.

Jining day general equipment co., LTD. Is a company engaged in water treatment equipment production, sales integration enterprise, after continuous efforts won the demand of the market both at home and abroad, won the customer consistent high praise.

Over the years, the company has always adhered to the concept of innovation, quality, service, dedication and gratitude. Adopt new ideas, strict quality, all-round service tracking, insist on making high-quality products.

My company main products: water treatment equipment, sewage treatment equipment, wastewater treatment, industrial wastewater, agricultural wastewater, rain water purification equipment, hospital sewage equipment, steel plant waste water equipment, slaughterhouse wastewater treatment equipment, food factory waste water treatment equipment and other equipment, can professional custom according to the water treatment equipment