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工業廢水在城市污水中的比重,因城市工業生產規模和水平而不同,可從百分之幾到百分之幾十.其中往往含有腐蝕性、有毒、有害、難以生物降解的污染物.因此,工業廢水必須進行處理,達到一定標準后方能排入生活污水系統.生活污水和工業廢水的水量以及兩者的比例決定著城市污水處理的方法、技術和處理程度.

一 工程概況

某啤酒公司以大麥和大米為主要原料，輔以啤酒花和鮮酵母制造啤酒，年產啤酒10萬噸。廢水處理工程的設計規模為3500m?/d，合146m?/h。

二  處理工藝

1 生產工藝及水質

廢水主要來源有：糖化車間的糖化、過濾洗滌水；發酵過程的發酵罐洗滌、過濾洗滌水；灌裝過程洗瓶、滅菌及破瓶啤酒；冷卻水和成品車間洗滌水等。

設計進水水質為：COD＝2500mg/L, BOD＝1800mg/L, SS＝400mg/L。

由于處理后的出水量最終排放的去向是城市污水管道，因此執行《污水綜合排放標準》（GB8978-1996）中的一級（新擴改）標準，即：COD＜100mg/L, BOD＜20mg/L, SS＜20mg/L。

2  處理工藝

本工程廢水中屬高濃度有機廢水，可生化性好，適合采用生化處理。通過工藝的選擇比較設計中采用了厭氧UASB和好氧SBR的組合工藝。

針對廢水懸浮物較多的特點，采用格柵和固液分離機兩級預處理進行去除，避免對后續UASB的影響。

3 工藝流程

本工程工藝流程

廢水先經細格柵去除雜物后，經固液分離機去除麥麩等大顆粒懸浮物，后進入集水井，由潛污泵提升進入調節池，調節水量水質后經過二次提升進入UASB反應器。UASB反應器處理后的出水進入好氧SBR曝氣池，處理后達標排放。設計中UASB前設有酸堿調節設施。曝氣池產生的剩余污泥重力排入調節池，有調節池提升進入厭氧池。從厭氧UASB池排出的剩余污泥進入污泥濃縮池，經濃縮后由帶式污泥脫水機進行脫水處理。濃縮池的上清液和脫水機房清液流回集水井。脫水后的污泥外運填埋或經堆肥等處理后制成生物有機肥。

4 主要設計參數

（1）       進水格柵和固液分離機  設一道細格柵，柵條間隙5mm。固液分離機采用轉筒式，帶自動沖洗裝置。分離出固體廢棄物可以同生活垃圾一同處理。

（2）       集水井和調節池  集水井設有2臺潛污泵提升廢水進入調節池。調節池內設有提升泵組，將廢水提升進入UASB反應器。調節池HRT=8h，有效容積1170m?，結構尺寸22.0m×12.0m×5.0m。

（3）       UASB反應器  有機負荷5.5kgCOD/(m?·d),有效容積1580m?，數量2座，單池尺寸?13.75m×5.65m，有效水深5.3m。設計去除效率COD85%、BOD85%、SS50%。

（4）       SBR反應器  污泥負荷0.25kgCOD/(kgMLSS·d)，有效容積1735m?，數量2座，單池尺寸?18.33m×4.65m，有效水深4.2m。選用膜片式微孔曝氣管300根，單管長2.2m。

（5）       鼓風機  SBR曝氣的氣水比10:1.風機選用SSR150型3臺，2用1備。單臺流量13.50m?/min，功率18.5Kw。

（6）       污泥處理系統  污泥處理系統包括濃縮池、污泥脫水機和加藥系統等。濕污泥產量140m?/d。污泥濃縮池停留時間18h，有效容積105m?，結構尺寸：?6.0m×6.88m,有效水深6.38m。脫水機房選用帶式壓濾脫水機1臺，帶寬1m.

三技術經濟指標

本項目總體投資600萬元。運行電耗0.33（Kw·h）/m?廢水，直接運行費用為0.35元/m?廢水。

濟寧天通設備公司是國內領先的水處理設備研發、生產制造銷售與一體的生產廠家，其核心產品以：污水處理設備、廢水處理設備、工業廢水設備、生活污水處理設備、食品廠污水處理設備、屠宰場廠廢水處理設備、醫院廢水處理、制藥廠廢水設備等水處理設備為主；

濟寧 天通，始終堅持以“先做人，后做事”為核心價值觀，以“儒商文化”為品牌文化，以“做今日品牌，創百年企業”為宗旨，以“實用為本、德行天下”為理念，鑄造中國機械行業的百年品牌。公司依托與國外的分支機構、國內的辦事處、及專業的施工隊伍，憑借行業內設備研發專家團隊的強大創新能力、扎實的設備品質、完善的售后服務體系，贏得了全球客戶的信任與合作。

In the proportion of urban sewage, industrial wastewater for the city's industrial production scale and level, but from a few percent to percentage decades. Which often contain corrosive, poisonous, harmful, are difficult to biodegradable pollutants. Therefore, industrial waste water must be treated, reach a certain standard rear can into the sewage system. Life sewage and industrial waste water amount and proportion of the two determines the urban sewage treatment methods, technology and level.

Project overview

A beer company, with barley and rice as its main raw materials, is supplemented with beer and fresh yeast, and produces a beer of 100,000 tons a year. The design scale of wastewater treatment works is 3500m cubed/d, which is 146m cubed/h.

Two-process process

1 production process and water quality

The main sources of waste water are the saccharification and filtration washing water in the saccharification workshop; Fermentation tank washing and filtration washing water; Bottling, sterilization and beer bottles; Cooling water and finished workshop washing water, etc.

Design water quality: COD = 2500mg/L, BOD = 1800mg/L, SS = 400mg/L.

Due to the water yield of final discharge after processing the whereabouts of the urban sewage pipeline, so "integrated wastewater discharge standard" (GB8978-1996) in the primary (new expansion change) standard, namely: COD < 100 mg/L, BOD < 20 mg/L, SS < 20 mg/L.

2 treatment process

The wastewater of this project is a high concentration organic wastewater, which can be biochemical and suitable for biochemical treatment. The combination process of anaerobic UASB and good oxygen SBR was adopted in the design of the process.

In order to avoid the influence of the following UASB, the two stage pretreatment of the grille and solid-liquid separation machine was used for the characteristics of waste water suspension.

3 process flow

This engineering process

Wastewater after fine grille to remove impurities, first through the solid liquid separator large particles suspended solids removal of wheat bran, into collecting well and the submersible sewage pump to ascend into adjusting pool, adjusting water quality after secondary to ascend into UASB reactor. After treatment of UASB reactor, the water outlet enters good oxygen SBR aeration tank, and after treatment, it is discharged. In the design, UASB is equipped with acid and alkali adjustment facilities. The residual sludge caused by aeration pool is pumped into the regulating pool, and the adjustment pool is raised to the anaerobic pool. The residual sludge discharged from anaerobic UASB pool enters the sludge thickening pool and is condensed and then dehydrated by the belt sludge dehydrator. The upper cleaning fluid and the dewatering machine room cleaning fluid flow back to the collecting well. Biological organic fertilizer is made after the treatment of the waste water after dehydration or compost.

Main design parameters

(1) a fine grating and 5mm gap between the inlet grille and solid-liquid separator. The solid liquid separator adopts rotary drum and automatic washing device. The separation of solid waste can be treated with living waste.

(2) collecting Wells and regulating pool Wells are equipped with two submersible pumps to lift wastewater into the regulating pool. The adjustment pool is equipped with the lifting pump group to upgrade the waste water into the UASB reactor. Adjustment pool HRT= 8h, effective volume 1170m cubic, structural dimensions 22.0m * 12.0m * 5.0 m.

(3) the organic load of 5.5 kgCOD/UASB reactor (m after · d), 1580 m after effective volume, number two, ? ChanChi size 13.75 m * 5.65 m, the effective depth of 5.3 m. Design removal efficiency COD85 %, BOD85 %, SS50 %.

(4) 0.25 kgCOD/SBR sludge load (kgMLSS · d), 1735 m after effective volume, number two, ? ChanChi size 18.33 m * 4.65 m, the effective depth of 4.2 m. The diaphragm was selected for 300 tubes with a single tube of 2.2 m.

(5) blower SBR aerated water ratio 10:1. The fan USES SSR150 type 3, 2 with 1. Single flow 13.50m cubed/min, power 18.5 Kw.

(6) sludge treatment system of sludge treatment system includes concentrated tank, sludge dewatering machine and additive system. The production of wet sludge is 140m cubed/d. Sludge concentration pool residence time 18 h, 105 m after effective volume, structure size: 6.0 m * 6.88 m ?, effective depth of 6.38 m. The dewatering machine room USES the belt type pressure filter dewatering machine 1, the bandwidth is 1m.

Technical and economic indicators

The total investment of the project is 6 million yuan. Running the power consumption of 0.33 (Kw · h)/m cubed wastewater, the direct operation cost is 0.35 yuan/m cubed wastewater.

Jining day pass equipment company is a leading domestic water treatment equipment research and development, manufacturing sales and one of the manufacturers, its core product: sewage treatment equipment, wastewater treatment, industrial wastewater treatment equipment, sewage treatment equipment, sewage treatment equipment, slaughterhouse wastewater treatment equipment in food, pharmaceutical wastewater, hospital wastewater treatment equipment, water treatment equipment is given priority to;

Jining day pass, always adhere to the "oneself first, after doing things" as the core values and brand culture of "intellectual businessman culture", to "do today's brand, set up one hundred enterprise" for the purpose, to "practical, virtue" for the idea, brand casting machinery industry in China in one hundred. Companies rely on with foreign branches, domestic offices, and professional construction team, with industry equipment research and development team of experts strong innovation ability, solid equipment quality and perfect after-sales service system, won the trust and cooperation of global customers.