【摘要】：“十一五”以來我國(guó)各大煤礦都建設(shè)了礦井水處理工程,礦井水處理回用率大大增加。為了掌握煤礦礦井水處理工程現(xiàn)狀,調(diào)研了冀中能源股份有限公司邢臺(tái)地區(qū)下屬各礦井水處理工程,結(jié)果表明,礦井水處理選用工藝合理,技術(shù)成熟。但是,礦井水處理工程良莠不齊,存在不少問題,主要有：調(diào)節(jié)池沒有起到良好的調(diào)節(jié)和預(yù)沉作用、一體化凈水器處理效果差、土建和安裝工程質(zhì)量較差、消毒系統(tǒng)和污泥脫水系統(tǒng)運(yùn)行的較少、自動(dòng)化程度不高、運(yùn)行管理水平有待提高。 針對(duì)礦井水水量、水質(zhì)不穩(wěn)定,預(yù)沉調(diào)節(jié)池作用不佳的問題提出建議,預(yù)沉調(diào)節(jié)池設(shè)計(jì)時(shí)應(yīng)注意礦井單位時(shí)間排水量與礦井水處理工程處理能力之間的關(guān)系,預(yù)沉調(diào)節(jié)池應(yīng)設(shè)置合理的排泥設(shè)施,并按時(shí)排泥。 一體化凈水器具有占地少、上馬快的優(yōu)點(diǎn),但適應(yīng)水量、水質(zhì)變化的能力較差。在應(yīng)用于礦井水處理領(lǐng)域時(shí),應(yīng)充分的校核設(shè)計(jì)參數(shù),如水力停留時(shí)間、反應(yīng)時(shí)間、沉淀負(fù)荷等。 礦井水處理工程自動(dòng)化程度普遍較低,加藥系統(tǒng)大多使用計(jì)量泵和磁翻板液位計(jì),這樣大大降低了加藥的準(zhǔn)確性,影響后續(xù)工藝的礦井水處理效果。PLC應(yīng)用于礦井水處理領(lǐng)域,不但能夠很好的降低人工勞動(dòng),還能為最后出水水質(zhì)提供有力保障。 污泥處理系統(tǒng)大多未使用,減少排泥對(duì)工程的長(zhǎng)期穩(wěn)定運(yùn)行不利。消毒系統(tǒng)大多處于閑置狀態(tài),這里存在一個(gè)錯(cuò)誤觀念,認(rèn)為礦井水處理后回用于工業(yè)生產(chǎn)可以不消毒,實(shí)際上污水再生處理回用于工業(yè)也應(yīng)考慮消毒,如用于井下防塵就必須進(jìn)行消毒處理。 邢東煤礦是國(guó)家級(jí)生態(tài)環(huán)境示范煤礦,全礦實(shí)現(xiàn)“產(chǎn)煤不見煤”。對(duì)邢東煤礦礦井水進(jìn)行了實(shí)驗(yàn)分析和動(dòng)態(tài)模擬,為其工程改進(jìn)提出了合理化建議,建議在工藝首端新建預(yù)沉調(diào)節(jié)池,采用“澄清+過濾”的處理工藝,目前工程已處于施工階段。
[Abstract]:Since the 11th Five-Year Plan, mine water treatment projects have been built in every coal mine in China, and the reuse rate of mine water treatment has increased greatly. In order to grasp the present situation of mine water treatment engineering in coal mine, the mine water treatment works under Xingtai region of Jizhong Energy Co., Ltd were investigated. The results show that the selection technology of mine water treatment is reasonable and the technology is mature. However, there are many problems in mine water treatment projects, such as the adjustment pool does not play a good role in regulating and pre-settling, the integrated water purifier has poor treatment effect, and the quality of civil construction and installation works is poor. The disinfection system and sludge dewatering system operate less, the degree of automation is not high, and the level of operation management needs to be improved. In view of the problems of unstable mine water quantity, unstable water quality and poor function of pre-settling regulating pool, some suggestions are put forward. The relationship between mine water discharge per unit time and the capacity of mine water treatment engineering should be paid attention to in the design of pre-settling regulating pool. The pre-settling regulating tank should be equipped with reasonable mud drainage facilities and discharge mud on time. The integrated water purifier has the advantages of less land occupation and quick start, but its ability to adapt to the change of water quantity and water quality is poor. In the field of mine water treatment, the design parameters, such as HRT, reaction time, sedimentation load, should be fully checked. The automation degree of mine water treatment project is generally low, and the metering pump and magnetic plate liquid level meter are mostly used in the dosing system, which greatly reduces the accuracy of the dosing, and affects the effect of mine water treatment. PLC is applied in the field of mine water treatment. Not only can reduce labor, but also can provide a strong guarantee for the final effluent quality. Sludge treatment system is mostly unused, and reducing sludge discharge is unfavorable to the long-term stable operation of the project. Most of the disinfection systems are idle. There is a wrong idea here that the treatment of mine water can be reused in industrial production without disinfection. In fact, the reuse of sewage treatment for industrial use should also be considered for disinfection. If used for downhole dustproof, it must be sterilized. Xingdong Coal Mine is a national ecological environment demonstration coal mine. The experimental analysis and dynamic simulation of mine water in Xingdong coal mine are carried out, and some reasonable suggestions are put forward for its engineering improvement. It is suggested that a new pre-settling regulating tank should be built at the first end of the process, and the treatment process of "clarification and filtration" should be adopted. At present, the project is already in the construction stage.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD74

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