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地下室污水提升方案

2019-12-03  來自: 衡水市衡美水處理設備有限公司 瀏覽次數:1819

如何進行水處理?

衡美水處理為您介紹一種***、實用的水處理技術——地下室污水提升技術。

污水提升

1 編制依據與編制說明 ............................... 1

2 排水設計概況 ..................................... 1

3排水降水施工條件 ..................................1

4施工布署 .......................................... 2

5 施工準備 ......................................... 2

6 施工方法 ......................................... 3

7地下室底板完成后的排水 ........................... 5

8基坑涌水量計算書 ................................. 6

9抽水泵數量計算 .................................. 6

10方案附圖 ........................................ 7

一、編制依據與編制說明

1、編制依據

(1)現場項目部提出的若干工程情況、配合要求等。

(2)《施工組織設計》及建設單位制定的工期節點要求。

(3)本工程現場基坑實際情況。

(4)建筑設計院設計的工程施工圖紙。

(5)以往類似工程經驗。

2、編制說明

本工程地下室施工,根據現場實際情況,******行排水降水工作,否則無法開展施工。故本工程排水降水工作特別重要,排水降水工作的好壞,直接關系到后續工作的開展、同時影響整個工期。故我項目部把此項工作列為地下室施工中的要點,并作了詳細的計劃和準備。

二、排水設計概況

由于場地為原有水塘,故基坑本來就存在積水,且水位線高、地下水豐富。 由于利用原水塘底做地下室底板基層,故基坑排水降水等同于一般工程的地面明排水。 本工程排水設計只排至現場西側1棟外道路上的市政排水井,若建設單位指定要排至小河內,我部應再補充方案。

三、排水降水施工條件

由于現場樁基施工已快完成,并有2棟及3棟辦理了部分場地的移交,具備工作面,又因為根據本工程地下室施工組織設計,原計劃先施工2棟部位,排水降水計劃符合組織設計要求?,F場周邊已完成了市政排水管及其它地下室分項工程施工準備工作,現場具備了施工條件,特制定本方案。

四、施工布署

1、水泵數量安排

根據本工程地下室施工組織設計,整個地下室施工分6個施工段,同一***施工過程在施工段之間組織依次施工。我部計劃隨著施工段的轉移抽水工作要點也隨之轉移,故共安排6臺大功率水泵抽水(直接從坑內抽到坑外),另安排10臺小功率水泵負責抽承臺水至坑內排水溝內并隨需要移動。

2、施工順序

自然水、表面積水及(結構集水井及低位承臺電梯井處集水井中的水)——后澆帶清洗槽——坑內周邊排水明溝——坑內周邊集水井——坑外截水明溝——沉淀池——市政排水井

五、施工準備

1、技術準備

(1)應具備的技術資料:作好抽水臺班計量工作,確定好建設單位指定的排水棄水口。

(2)測量好排水溝、集水井的位臵。

2、機械設備準備

所有施工機械在土方工程施工前,全部調至正常工作狀態,并在機具保管室備足各種設備易損件,對每臺機具的維修都要定人定機。對于大功率水泵現場共7臺,留1臺備用。

(1)系統設備配臵

抽水泵 75WGL 7臺 備用2臺

人員:5名

鐵鍬:5把 抽水帶:400米

開關箱;5個

3、現場準備

1)疏通運輸道路,接通施工中臨時用水、電源。

2)作好集水井處的安全防護工作。

4、材料準備:

現場應準備好水泥、沙、卵石、磚以及集水井所用材料

六、施工方法

1、排水方法:

本工程地下室水位較高,根據現場情況,計劃排水采用明溝、集水井相結合的方式進行排水,由于本工程底板為無結構找坡,故計劃從中間向東西方向排水,經過沉淀池沉淀后排入建設單位指定的市政排水口。整個排水系統如下:

利用地下室部位的結構集水井抽水至1棟、2棟3棟北側截水溝,后澆帶排水明溝排入基坑內周邊排水溝,基內周邊排水溝排入坑內周邊排水溝中的集水井,再由坑內周邊集水井抽出坑內,排入坑外的截水溝,截水溝排水至建設單位指定的市政排水口。

排水流程如下:自然水、表面積水及(結構集水井及低位承臺電梯井處集水井中的水)——后澆帶清洗槽——坑內周邊排水明溝——坑內周邊集水井——坑外截水明溝——市政排水井

基坑內結構集水井、低位承臺電梯井處臨時集井作法,采用鋼筋籠外封鋼絲網包裹,開挖臨時集水井時,其開挖邊跟鋼筋籠外邊大于500mm為宜,底鋪500厚5-40粒徑卵石作過濾層,然后再把鋼筋籠放入并用同樣卵石大致500mm厚從側圍作為過濾層。抽水泵可直接放臵在鋼筋籠中。

后澆帶清洗槽,在后澆帶底部按結構說明開挖深>100mm溝槽然后在底部澆好C15砼墊層100厚(同時做好防水附加層),按0.3%坡底排水具體作法如附圖:

污水提升

基坑施工排水降水平面布置圖

坑內周邊排水溝及坑外截水溝作法;直接用灰沙磚砌筑底部100厚C15素 砼找坡,溝槽內用水泥砂抹面,其大小為300*250(溝壁厚度為120mm)。如下圖所示:

污水提升

沉淀池詳見排水平面布臵圖,本工程設臵兩個沉淀池,位于6、7棟南側,經沉淀后直接排入建設單位指定的市政排水井。沉淀池設三級沉淀尺寸1600*1000*1000(內凈)。磚砌沉淀池,池壁厚120mm內抹1:3的水泥砂漿。

污水提升污水提升

2、排水降水應注意的事項

(1)在做集水井時,井底鋪0.3m厚的碎石,以免泥砂堵塞水泵。

(2)水溝應對照集水井的位臵,開挖時應注意放坡2-3%,以使基坑地表及地下水順利流入集水井。

(3)集水井做好之后,應派專人抽水,直至地下室施工完畢,回填土完成,方可停抽。

(4)抽水時要注意出水是否澄清,不可過分抽水,以避免造成水頭差,出現流沙現象。

七、地下室底板完成后的排水

1、排水流程:

底板完成后,考慮后澆帶清洗等施工作出以下清洗排水流程: 清洗后澆帶積水——結構底板排水明溝——結構集水井——用水泵抽至基坑外截水溝

2、排水集水井施工:

(1)利用與后澆相連的結構集水坑作積水井;

(2)利用基坑開挖時的坑內周邊臨時集水井(具體詳見后附“地下室底板后澆帶清洗排水平面圖”。

八、基坑涌水量計算書

1、基坑類型:矩形基坑。

2、基坑簡圖:

污水提升

3.計算公式:

污水提升

其中 Q──基坑涌水量

Q1=514.3 m3/d

Q2=311.7 m3/d

Q3=324.9m3/d

總涌水量Q=Q1+Q2+Q3=1150.9 m3/d

九、抽水泵數量計算

1、現場確定采用75WGL型泥漿泵,抽水量為:40m3/h

2、基坑總涌水量為:1150.9m3/d。

每小時涌水量=1150.9÷24=47.9m3/h。

3、集水坑數量為5個,每坑設臵一臺抽水泵:

每小時抽水量=40×5=200m3/h>47.9m3/h。

經計算用5臺75WGL型泥漿泵即可滿足抽水要求。

十、方案附圖

污水提升

10.1基坑施工排水降水平面布臵圖

本方案中水箱代替了傳統方式中的集水坑。除進口、出口、通風口外,集水箱完全密閉、防水、防異味泄漏,異味不會因泄漏而彌漫在設備間中,避免了對環境的污染。集水水箱體積比傳統集水坑占地空間小得多。集水箱的作用不再是蓄水,而是“過流”;裝置配套的水泵,可以頻繁起停,性能穩定。

集水箱過流污水,一旦到達設定液位高度水泵即會啟動,將污水提升排放出去,污水很難在集水箱內積存,減少了異味的產生,同時,裝置采用全密閉結構,不會有異味泄漏,正常排氣通過通氣管排出室外,居住環境就不會造成影響。 裝置的集水箱的材料,一般都要求具有抗腐蝕,抗老化能力,使用壽命長。

環比國內部分別墅、酒樓酒店、寫字樓、工廠、工地、學校、醫院、商場、車站、機場等地下室無排水條件的場合,造型感觀、運行性能的穩定性、安全性、可靠性,以及設備運行過程中的維護保養

80年代,設計院設計的排水都是在地下室或室外建一個污水坑,別墅地下室衛生間污水、設備機房排水、天井雨水等都流入這個污水坑,然后在污水坑內設置二臺污水泵輪換工作把污水提升到市政管網,如果其中一臺污水泵發生故障需要檢修,另一臺污水泵自動投入工作,由于用的污水泵是380V的,而且是鉸刀污水泵,這種方式可靠性是最高的。

2000年之后,有部分用戶仍然沿用傳統的潛污泵提升方式,有部分用戶從國外引入污水提升器,而污水提升器有如下缺陷:

1、其內排水泵一般不帶鉸刀,不能絞碎污水中的毛發、煙頭、衛生用品(如:衛生巾)、計生用品、和塑料片,而這些雜物在現實中是普遍存在的,一旦隨污水悄悄的流入污水提升器內,立刻發生堵轉燒毀水;

2、其電機功率只能配置很小,一般都是塑料單相泵,電機浸水經常發生故;

3、主機都是單臺泵,一旦發生故障,沒有備用泵投入運行,家里所有排水設備都立刻不能用;

4、容器容積很小,洗衣機、浴缸放水經常把電控裝置泡水受濕發生燒壞,這些原因經常造成用戶尷尬和無奈。

潛污泵的相關數據及要求:

1、交流電壓:220V/50HZ (±10%)或380V/50HZ (±10%)

2、額定功率:600w到1200w

3、整體防護等級:IP55

4、最高揚程:5到8米

5、水平距離范圍:200米到300米

6、流量:8立方每小時

7、自動控制:自動壓力開關,無需人工操作

8、 雙路控制:自動及手動雙路控制,免除后顧之憂

9、使用壽命: 可重復啟動100萬次,在每天使用100次的情況下,可用10年以上。

10、低噪音: 〈40分貝〉

11、具有撕裂和攪勻功能

根據市場調查:一套傳統的以上規格的潛污泵設備(一個雙控配電箱、兩個浮球、兩臺潛污泵)市場價格為3000—4000元。

綜上所述:

由于污水的成分很復雜,淋浴室、洗手盆排放的廢水、座便器排放,含廁紙與糞便的污水;

常用衛生設備的清洗劑,及夾帶塑料、硬紙板、衛生巾、衛生棉塞、尿片、頭發、金屬物等物質的液體,已成為國內地下建設者們非常頭痛的一個問題。

衡美水處理專注水處理設備生產研發十五年,為您量身定制水處理解決方案!

衡水市衡美水處理設備有限公司,專營 淺層砂過濾器 過濾器 全自動加藥裝置 原水處理設備 等業務,有意向的客戶請咨詢我們,聯系電話:0318-2987119

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