问题 问答题

铅酸蓄电池厂改扩建

某铅酸蓄电池企业拟对现有两条生产能力均为25万千伏安时/年的生产线(生产工艺流程见下图)实施改扩建工程。

现有工程生产工艺废水经混凝沉淀述标后排入城市污水处理厂,地面冲洗水、职工浴室和洗衣房排水等直接排入城市污水处理厂。采用“旋风+水喷淋”或布袋除尘处理含铅废气,采用碱液喷淋洗涤处理硫酸雾。制板栅工段的铅污染物排放浓度监测结果见下表。

现有工程生产线制板栅工段含铅废气监测结果
工段风量/(m3/h)初始浓度/(mg/m3)排放浓度/(mg/m3)排气筒
制板栅4.0×1044.260.34H=15m

改扩建方案为:保留一条生产线。拆除另一条生产线中的熔铅、制粉、制铅膏、制板栅、涂板、化成、切片等前段工序,将其配组总装工序生产能力扩大为50万千伏安时/年。

注:《大气污染物综合排放标准》(GB 16297—1996)铅排放浓度限值0.70mg/m3,排气筒高15m时排放速率限值0.004kg/h;《工业炉窑大气污染物排放标准》(GB 9078—1996)铅排放浓度限值0.10mg/m3

[问题]

说明工程分析中应关注的焦点。

答案

参考答案:

工程分析应该分析的内容有:

(1)原项目环评及验收情况分析。

(2)原项目各种污染物治理措施及达标排放分析并说明存在的主要环境问题。

(3)原项目与改扩建项目的工程组成、建设内容、主要经济技术指标、产品方案及产能、原辅料种类及用量、生产设备、生产工艺等的对比比较。

(4)原项目与改扩建项目的工艺流程及产污环节、污染源及强度、污染物排放方式、产排污量的估算。

(5)“三本帐”的核算,说明污染物的增减情况。

(6)改扩建方案各种污染防治措施分析。

(7)总图布置合理性分析。

(8)改扩建项目完成后前段工序与配组总装和充电清洗工序的配套合理性。

(9)卫生防护距离的达标分析。

(10)技改后达标排放及总量控制。

阅读理解

阅读理解。

     One of our biggest fears nowadays is that our kids might some day get lost in a "sea of technology"

rather than experiencing the natural world. Fear-producing TV and computer games are leading to a

serious disconnect between kids and the great outdoors, which will changes the wild places of the world,

its creatures and human health for the worse, unless adults get working on child's play.

     Each of us has a place in nature we go sometimes, even if it was torn down. We cannot be the last

generation to have that place. At this rate, kids who miss the sense of wonder outdoors will not grow up

to be protectors of natural landscapes. "If the decline in parks use continues across North America, who

will defend parks against encroachment (蚕食)?" asks Richard Louv, author of Last Child in the Woods.

     Without having a nature experience, kids, can turn out just fine, but they are missing out a huge

enrichment of their lives. That applies to everything from their physical health and mental health, to stress

levels, creativity and cognitive (认知的) skills. Experts predict modern kids will have poorer health than

their parents-and they say a lack of outside play is surely part of it; research suggests that kids do better

academically in schools with a nature component and that play in nature fosters (培养) leadership by the

smartest, not by the toughest. Even a tiny outdoor experience can create wonder in a child. The three-year-

old turning over his first rock realizes he is not alone in the world. A clump of trees on the roadside can be

the whole universe in his eyes. We really need to value that more.

     Kids are not to blame. They are over-protected and frightened. It is dangerous out there from time to

time, but repetitive stress from computers is replacing breaking an arm as a childhood rite (仪式) of passage.

     Everyone, from developers, to schools and outdoorsy citizens, should help regain for our kids some of

the freedom and joy of exploring, taking friendship in fields and woods that cement (增强) love, respect and

need for landscape. As parents, we should devote some of our energies to taking our kids into nature. This

could yet be our greatest cause.

1. The main idea of Paragraph 2 is that _____.

A. kids missing the sense of wonder outdoors

B. parks are in danger of being gradually encroached

C. Richard Louv is the author of Last Child in the Woods

D. children are expected to develop into protectors of nature

2. According to the passage, children without experiencing nature will _____.

A. keep a high sense of wonder

B. be over-protected by their parents

C. be less healthy both physically and mentally

D. change wild places and creatures for the better

3. According to the author, children's breaking an arm is _____.

A. the fault on the part of their parents

B. the natural experience in their growing up

C. the result of their own carelessness in play

D. the effect of their repetitive stress from computers

4. In writing this passage, the author mainly intends to _____.

A. blame children for getting lost in computer games

B. encourage children to protect parks from encroachment

C. show his concern about children's lack of experience in nature

D. inspire children to keep the sense of wonder about things around

单项选择题